mirror of
https://github.com/postgres/postgres.git
synced 2025-10-29 22:49:41 +03:00
49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
#include "postgres.h"
|
|
|
|
typedef bits8 *VarBit;
|
|
typedef uint32 BitIndex;
|
|
|
|
#define HEXDIG(z) (z)<10 ? ((z)+'0') : ((z)-10+'A')
|
|
|
|
|
|
#define BITSPERBYTE 8
|
|
#define VARBITHDRSZ sizeof(int32)
|
|
/* Number of bits in this bit string */
|
|
#define VARBITLEN(PTR) (((struct varlena *)VARDATA(PTR))->vl_len)
|
|
/* Pointer tp the first byte containing bit string data */
|
|
#define VARBITS(PTR) (((struct varlena *)VARDATA(PTR))->vl_dat)
|
|
/* Number of bytes in the data section of a bit string */
|
|
#define VARBITBYTES(PTR) (VARSIZE(PTR) - VARHDRSZ - VARBITHDRSZ)
|
|
/* Padding of the bit string at the end */
|
|
#define VARBITPAD(PTR) (VARBITBYTES(PTR)*BITSPERBYTE - VARBITLEN(PTR))
|
|
/* Number of bytes needed to store a bit string of a given length */
|
|
#define VARBITDATALEN(BITLEN) (BITLEN/BITSPERBYTE + \
|
|
(BITLEN%BITSPERBYTE > 0 ? 1 : 0) + \
|
|
VARHDRSZ + VARBITHDRSZ)
|
|
/* pointer beyond the end of the bit string (like end() in STL containers) */
|
|
#define VARBITEND(PTR) ((bits8 *) (PTR + VARSIZE(PTR)))
|
|
/* Mask that will cover exactly one byte, i.e. BITSPERBYTE bits */
|
|
#define BITMASK 0xFF
|
|
#define BITHIGH 0x80
|
|
|
|
|
|
char * zpbitin(char *s, int dummy, int32 atttypmod);
|
|
char * zpbitout(char *s);
|
|
char * zpbitsout(char *s);
|
|
char * varbitin(char *s, int dummy, int32 atttypmod);
|
|
bool biteq (char *arg1, char *arg2);
|
|
bool bitne (char *arg1, char *arg2);
|
|
bool bitge (char *arg1, char *arg2);
|
|
bool bitgt (char *arg1, char *arg2);
|
|
bool bitle (char *arg1, char *arg2);
|
|
bool bitlt (char *arg1, char *arg2);
|
|
int bitcmp (char *arg1, char *arg2);
|
|
char * bitand (char * arg1, char * arg2);
|
|
char * bitor (char * arg1, char * arg2);
|
|
char * bitxor (char * arg1, char * arg2);
|
|
char * bitnot (char * arg);
|
|
char * bitshiftright (char * arg, int shft);
|
|
char * bitshiftleft (char * arg, int shft);
|
|
char * bitcat (char *arg1, char *arg2);
|
|
char * bitsubstr (char *arg, int32 s, int32 l);
|